Antonio King, 22, walked into the Nashville Smile Direct Club warehouse on Tuesday, where he has worked since June, and opened fire on three people The disturbing 911 calls made during a workplace shooting that left three injured and the gunman dead, were released by Nashville police Wednesday. On Tuesday, 22-year-old Antonio King went to the Nashville Smile Direct Club warehouse, where he has worked since June, and opened fire into the building. The motive for the shooting remains unclear. 'He's got multiple clips in his sling pack because he keeps replacing bullets,' a witness outside the building frantically tells a 911 dispatcher. 'I probably heard 20 rounds.' The caller provides the dispatcher with a description of King as he walks alongside the building shooting. 'The shooter has a green shirt on and a sling pack around his shoulder,' the caller says. 'He's walking beside the building currently – still shooting.' On Wednesday, authorities also released security camera video and officers' bodycam footage from the scene. In this surveillance video still, King can be seen firing his .45 caliber handgun at security guards and into the Smile Direct Club warehouse Video footage captured King as he reloaded his pistol multiple times during the workplace shooting King arrived at the warehouse around 6am Tuesday, firing more than 20 rounds from a .45 caliber pistol. Video shows him reloading the gun multiple times as he shoots into the manufacturing facility. In a second 911 call made during Tuesday's tragic workplace shooting, another caller tells the dispatcher that a security officer has been shot as workers frantically attempt to flee and hide. 'I have an active shooter. … There is a security officer shot,' one of the callers tells the 911 dispatcher as King engaged the guards in a shootout. 'We cleared the office area and we’re trying to clear people in the parking lot. People are seeking shelter in between the vehicles.' Security guard Johnny Hardin, 46, was shot and transported to a nearby hospital in critical condition, while 66-year-old Carlton Watson and Thomas Abbott, 43, were both taken to the hospital in stable condition. Abbott, the facility's manager, was released shortly after being admitted, according to a tweet from Metro Nashville Police Department. Pictured: Responding officer Dylan Ramos' bodycam footage shows the moments leading up to the fatal police-involved shooting Ramos and officer Cherell Kinchloe were forced to shoot King after he refused to comply with commands King then fled to a nearby intersection, where police tracked him down. Responding officers Cherell Kinchloe and Dylan Ramos fired several shots at King when he did not comply with orders to drop his weapon. King was fatally shot by police after raising his gun toward them. 'Officers engaged with King on Antioch Pike,' Nashville police said. 'He refused commands to drop his gun and was fired on as he raised his pistol at police.' In this video still, King can be seen casually leaving the scene after shooting three security guards outside of his place of work on Tuesday Nashville police spokesman Kristin Mumford said in a video statement, that the department is reviewing the fatal police-involved shooting, she said regarding the incident. 'The actions of Officer Kinchloe, in firing two shots given the vantage point represented by her video, are under review by the police department,' Mumford said. King's family members and coworkers are in shock following Tuesday's tragic incident, with one coworker telling Nashville's Fox 17 that King was 'nice, polite and smart.' Family members told WKRN-TV that King was a 'quiet, caring, fun-loving, and hardworking' young man. 'The actions of Officer Kinchloe, in firing two shots given the vantage point represented by her video, are under review by the police department,' said public affairs officer Kristin Mumford King was fatally shot by police after raising his gun towards the officers 'The reality of his mental illness has taken us by surprise,' the family added. 'It is important for us as a community to be aware of how mental illness can manifest itself in our loved ones in friends. In the days that we live in where it is so easy to shame, belittle, berate, and criticize others without knowledge of how they struggle daily,' King's family told the outlet. Smile Direct Club released a statement later Tuesday, saying the company is 'shocked and deeply saddened by the tragic incident that took place at our (Nashville) manufacturing facility.' 'We are grateful for the swift actions taken by our Team Members, security personnel and Metro Nashville Police in responding to, and quickly containing, the situation,' the company said in the statement. 'The safety of our Team Members is a top priority for the Company, and we maintain strict security protocols and a no weapons policy at all our facilities.' All rights reserved for this news site (dailymail) and under his responsibility